HP OpenVMS Systems

TLZ07 and DDS-2 tape media?

Good Morning,
i have a TLZ07 and i use DDS2 Tapes, for what i know tlz07 should support dds2
tapes.
The problem is that the dds2 tape seems not to be recognised and they are
treated as DDS1.
I have tryed to use the following command, but it is steel seen as a dds1.
$init/media=compa/dens=dds2
$mount/foreign/cache=tape_data/media=compa/dens=dds2
$backup/log/image/rew/dens=dds2/media=compa
Any suggestion???
Thanks in advance,
Gianni.

The Answer is :

The OpenVMS Wizard would expect a TLZ07 to recognize and process
DDS-2 (DDS-2 120M and DDS-2 90M) media, as well as the older
DSS-1 (DDS-1 90M and 60M) media.
The media involved will generally have either a DDS or a DDS-2 logo.
For what should be obvious reasons, your tapes should be DDS-2 logo
90M or 120M tapes -- there has been both DDS-1 and DDS-2 90M media
seen around, 120M is normally only DDS-2.
Do not use DDS-2 media in a DDS-1 drive. This can lead to problems
with the media and the drive, as DDS-1 drives and DDS-2 media are
not particularly compatible. (DDS-2 media is thinner than DDS-1.)
You can use DDS-1 media in a DDS-2 drive, and with recording formats
compatible with DDS-1 drives.
You may want to check for available OpenVMS ECO kits, as well, as
there have been cases were displays were incorrect or compaction
was not correctly enabled.